code: def __exit__(self):
      if hasattr(self, "_client_session"):
          self._client_session.close()
  
file_path: litellm/litellm/llms/base.py
imports: import litellm
  import httpx
  from typing import Optional
label_desc: Use image node_id 3 for calling the BaseLLM obj's underlying member method code with example usage: obj.__exit__() without return types